For gamers who demand the very best, AMD Radeon R9 270 graphics shatters ordinary GPU performance. Groundbreaking GCN Architecture pushes your performance to insane levels while AMD TrueAudio technology and ultra-resolution gaming take you even deeper into the action., We tested the XFX R9 270 for Ethash and was able to produce 16.5 Mh/s while mining Ethereum. The test was preformed on a machine running the Ethereum mining dedicated operating system ethOS.